package com.arron.facade;

public class Stereo {
    private static final Stereo instance = new Stereo();

    private Stereo() {
    }

    public static Stereo getInstance(){
        return instance;
    }

    public void on(){
        System.out.println("Stereo on...");
    }

    public void off(){
        System.out.println("Stereo off...");
    }

    public void up(){
        System.out.println("Stereo up...");
    }

    public void down(){
        System.out.println("Stereo down...");
    }
}
